Categorías: Todo

por R G hace 15 años

295

Pedi Neuropath

The text discusses various congenital brain malformations and their associated conditions, highlighting different neuropathological issues. It includes descriptions of posterior fossa malformations like the Dandy-Walker syndrome, characterized by an enlarged posterior fossa and an absent vermis, often linked to hydrocephalus and Arnold-Chiari malformations.

Pedi Neuropath

Pedi Neuropath

Leukodystrophies / Lysosomal

Lysosomal
Pompe's

Elevated CPK

Pompe = Think Pump

HF, Muscle weakness, Fatigue

Myopathic

Acid maltase deficiency

Gaucher

No abnormal lipid storage

Gaucher cells in Virchow-Robin spaces

Neimann-Pick

Sphingomyelinase defic.

MPS

Ganglioside buildup, "Zebra bodies"

MPS 2

Hunter

MPS 1

Hurler

Neuronal Ceroid lipofuscinosis

Lipofuscin-like pigment in neurons, leukocytes

Seizure, blindness frequent

Autofloresces green

Tay-Sachs

Hexosaminidase defic

GM2 ganglioside toxicity

Blindness

Leukodystrophy
Adrenoleukodyst

Symptoms

Adrenal insufficiency

Spastic paraplegia

Needle-like cells

Fatty acyl-CoA ligase

Metachromatic leukodyst

Turns black on toluidine blue

Myelin loss, spared subcortical u-fibers

Arylsulfatase deficiency

Cerebroside sulfate toxicity

Krabbe's

Die before 1 year

galactocerebroside beta-galacctocerebrosidase

Path

Multinucleated globoid cells around blood vessels

Myelin loss in CNS & PNS

Psychosine toxicity

Hyperirritable

Malformations

Posterior fossa

Enlarged

Dandy-Walker

Absent vermis

cyst protrudes from 4th ventricle

Arnold-Chiari

Hydrocephalus

Lumbar myelomeningocoele

Herniated vermis, foramen magnum

Forebrain
D/O of Organogenesis

Agenesis of corpus callosum

Brain halves don't communicate

"Batwing" X-ray

Holoprosencephaly

Poikilothermia

"Horseshoe" brain

Fused basal ganglia

Absent olfactory nerves

Incomplete separation of hemispheres

D/O of Cell migration

Volume

Small

Microencephaly

Large

Megalencephaly

Convolutions

Too little

Lissencephaly (agyria)

Too many

Polymicrogyria

NTDs
Myelomeningocoele
Meningocoele
Spina bifida occulta
Anencephaly